Soft X‐Ray Lines and Gas Composition in NGC 1068
نویسندگان
چکیده
منابع مشابه
Ultraviolet Lines and Gas Composition in NGC 1068
Recent ultraviolet and X-ray observations suggest that the Fe/O ratio in the NLR gas in NGC 1068 is abnormally high. The X-ray analysis, which is presented elsewhere, suggests a large Fe/H and the data shown and discussed here, in particular the extremely weak O iii]λ1663 line, argue for small O/N and O/C. Models to support this claim are shown and discussed. They include improved reddening est...
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Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany 2 Department of Astronomy, University of Maryland, College Park, MD 20742, USA 3 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA 4 National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801, USA 5 Johns Hopkins University, Department of Physics and Astronomy, Homewood Cam...
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We present SAURON integral field spectrography of the central 1.5 kpc of the nearby Seyfert 2 galaxy NGC 1068, encompassing the well-known near-infrared inner bar observed in the K band. We have successively disentangled the respective contributions of the ionized gas and stars, thus deriving their two-dimensional distribution and kinematics. The [Oiii] and Hβ emission lines exhibit very differ...
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We present J -band long-slit spectroscopic observation of NGC 1068 classified as a Seyfert 2 galaxy. J -band observations with OAO/ISLE provide clear detection of spatially extended [Fe II] 1.257 m and [P II] 1.188 m lines. We found that [Fe II] 1.257 m=[P II] 1.188 m increases with distance from a central continuum peak. Observed line ratios around the nucleus (continuum peak) are consistent w...
متن کاملISO - SWS spectroscopy of NGC 1068
We present ISO-SWS spectroscopy of NGC 1068 for the complete wavelength range 2.4 to 45μm at resolving power ∼1500. Selected subranges have been observed at higher sensitivity and full resolving power ∼2000. We detect a total of 36 emission lines and derive upper limits for 13 additional transitions. Most of the observed transitions are fine structure and recombination lines originating in the ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1997
ISSN: 0004-637X,1538-4357
DOI: 10.1086/304743